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19 November, 12:38

The sum of a number 9 is multiplied by - 2 and the answer is - 8

find the number.

+5
Answers (1)
  1. 19 November, 12:46
    0
    The missing number is equal to - 5.

    -2 (x + 9) = - 8

    Distributive property.

    -2x - 18 = - 8

    Add 18 to both sides.

    -2x = 10

    Divide both sides by - 2.

    x = - 5
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